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Types of tile grout for tile and stone works
Tile grout products are classified into two types:
CG – Cementitious grouts
RG – Reaction-resin grouts
Requirements of Cementitious tile grouts
Cementitious grouts that meet the minimum requirements EN 13888 and ISO 13007-3 are
classified as CG1 for normal performance. If they meet the requirements of additional
performance characteristics on high abrasion resistance (A) and reduced water absorption
(W), they can be classified as improved grouts under classes CG2W, CG2A or CG2WA.
The table below shows the fundamental and additional requirements for cementitious tile grouts:
Requirements of Reaction-resin tile grouts
Due to their inherent nature, reaction-resin grouts have high performancecharacteristicsand, as such, have their own single classificationaccording
to EN 13888 and ISO 13007-3 (see table below):
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Apart from the performance requirements specified by the standards,
tile grouts may also have additional characteristics such as water-repellency.
This property prevents liquid that falls onto the surface of the
grout line to be absorbed immediately.
Liquid remain longer on the surface so they may be cleaned off before
staining the grout, thereby increasing its durability.
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